Sedimentary Rocks are formed by pressure, heat, and “drying out”. Sediments do not necessarily have to be under tremendous pressure to become sedimentary rock (as seen in the lab).
The Earths Crust is made up of solid bedrock. (Bedrock is solid rock that is connected continuously down into the Earth’s crust, rather than existing as separate pieces or masses surrounded by loose materials
Sedimentary Rock are by far the most common rock type in the upper crust